Heudorf, U., Müller, M., Schmehl, C., Gasteyer, S., & Steul, K. (2020). COVID-19 in long-term care facilities in Frankfurt am Main, Germany: Incidence, case reports, and lessons learned. GMS Hyg Infect Control.

Heudorf, Ursel, Maria Müller, Cleo Schmehl, Stephanie Gasteyer, and Katrin Steul. "COVID-19 in Long-term Care Facilities in Frankfurt Am Main, Germany: Incidence, Case Reports, and Lessons Learned." GMS Hyg Infect Control 2020.

Heudorf, Ursel, et al. "COVID-19 in Long-term Care Facilities in Frankfurt Am Main, Germany: Incidence, Case Reports, and Lessons Learned." GMS Hyg Infect Control 2020.